Prediction Market Showdown: Polymarket’s Crypto Edge vs. Kalshi’s Regulatory Playbook

They’ve gained prominence as tools for gauging sentiment, especially during US presidential elections, where they’ve often outperformed traditional polls. Among the leading platforms, Polymarket and Kalshi stand out, yet they differ sharply in technology, regulation and audience.

Two platforms, two philosophies

While both are prediction markets, their foundations couldn’t be more different.

Polymarket is a decentralized platform built on Ethereum and Polygon, where users trade on event outcomes using cryptocurrency (mainly USDC). It operates through smart contracts and crypto wallets like MetaMask, giving users full custody of funds and requiring no identity verification. This design allows global participation but excludes US residents due to past regulatory restrictions. Polymarket now plans to re-enter the US market under a new CFTC license, a move toward partial compliance. The trade-off: high accessibility and privacy, but exposure to blockchain complexity, gas fees and limited dispute resolution.

Kalshi, meanwhile, is a centralized, CFTC-regulated exchange using US dollars. Its markets are tightly supervised, bringing institutional credibility and a smoother user experience. Yet strict KYC requirements, slower fund processing and limited reach have made it less open than its crypto-native rival. In essence, Polymarket embodies the Web3 ethos of open, borderless markets, while Kalshi reflects TradFi’s instinct for compliance and control.

Market leadership: a volatile tug-of-war

From 2023 to late 2025, Polymarket and Kalshi have traded leadership in a tug-of-war shaped by regulation, liquidity and user sentiment. Polymarket led through mid-2024 amid crypto-focused markets, while Kalshi gained traction as regulatory clarity broadened participation. 

As of late October 2025, Kalshi leads with 57% of total volume, generating about $1.26bn in weekly trades versus $961mn on Polymarket. Yet dominance between the two remains highly volatile, and Polymarket’s upcoming CFTC-licensed US relaunch could once again tilt momentum in its favour.

(source: TokenTerminal)

On-chain transparency and measurable growth

Because Polymarket is built on blockchain, its activity is fully transparent and publicly verifiable. Every trade, market and liquidity flow can be tracked onchain, offering a level of visibility that Kalshi’s centralized model cannot match. 

From 2023 to late 2025, Polymarket’s onchain data shows robust growth in trading volume, liquidity and user activity. Volumes surged past $1bn weekly during the 2024 US election before falling as markets settled and payouts were executed. Total Value Locked (TVL) and weekly active users followed the same pattern, dropping sharply after November 2024. Since mid-2025, however, all three metrics have regained momentum, with trading volume at $961mn, TVL at $232mn, and weekly active users near 240,000, all approaching previous all-time highs - a signal of renewed confidence in decentralized prediction markets.

(source: TokenTerminal)

Polymarket’s rapid recovery highlights a remarkably sticky user base. Even without a native token or incentive program, engagement has surged, suggesting genuine product-market fit. Users treat it as a decentralized, data-driven alternative to polls, offering real-time sentiment in an era of misinformation and polarization.

That stickiness may strengthen with the anticipated POLY token launch. The first confirmation came in October 2025, when the team said its focus would shift to the token following the completion of its US-compliant relaunch. Despite the absence of incentives so far, user engagement has grown organically. The planned airdrop, reportedly tied to trading volume, is expected to reward loyal traders and attract new participants, potentially amplifying activity as Polymarket expands into regulated US markets.

Conclusion

Prediction markets are rapidly expanding, now generating billions in weekly volume and cultivating increasingly sticky user bases. Together, Polymarket and Kalshi represent two diverging models for the sector, one driven by decentralization and open access, the other by regulation and institutional credibility. As Polymarket secures a regulatory pathway into the US, the key question is whether it can reclaim volume dominance in a market it helped define.